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/*
* V9FS definitions.
*
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
* Free Software Foundation
* 51 Franklin Street, Fifth Floor
* Boston, MA 02111-1301 USA
*
*/
/*
* Idpool structure provides lock and id management
*
*/
struct v9fs_idpool {
struct semaphore lock;
struct idr pool;
};
/*
* Session structure provides information for an opened session
*
*/
struct v9fs_session_info {
/* options */
unsigned int maxdata;
unsigned char extended; /* set to 1 if we are using UNIX extensions */
unsigned char nodev; /* set to 1 if no disable device mapping */
unsigned short port; /* port to connect to */
unsigned short debug; /* debug level */
unsigned short proto; /* protocol to use */
unsigned int afid; /* authentication fid */
unsigned int rfdno; /* read file descriptor number */
unsigned int wfdno; /* write file descriptor number */
char *name; /* user name to mount as */
char *remotename; /* name of remote hierarchy being mounted */
unsigned int uid; /* default uid/muid for legacy support */
unsigned int gid; /* default gid for legacy support */
/* book keeping */
struct v9fs_idpool fidpool; /* The FID pool for file descriptors */
struct v9fs_idpool tidpool; /* The TID pool for transactions ids */
/* transport information */
struct v9fs_transport *transport;
int inprogress; /* session in progress => true */
int shutdown; /* session shutting down. no more attaches. */
unsigned char session_hung;
/* mux private data */
struct v9fs_fcall *curfcall;
wait_queue_head_t read_wait;
struct completion fcread;
struct completion proccmpl;
struct task_struct *recvproc;
spinlock_t muxlock;
struct list_head mux_fcalls;
};
/* possible values of ->proto */
enum {
PROTO_TCP,
PROTO_UNIX,
PROTO_FD,
};
int v9fs_session_init(struct v9fs_session_info *, const char *, char *);
struct v9fs_session_info *v9fs_inode2v9ses(struct inode *);
void v9fs_session_close(struct v9fs_session_info *v9ses);
int v9fs_get_idpool(struct v9fs_idpool *p);
void v9fs_put_idpool(int id, struct v9fs_idpool *p);
int v9fs_get_option(char *opts, char *name, char *buf, int buflen);
long long v9fs_get_int_option(char *opts, char *name, long long dflt);
int v9fs_parse_tcp_devname(const char *devname, char **addr, char **remotename);
#define V9FS_MAGIC 0x01021997
/* other default globals */
#define V9FS_PORT 564
#define V9FS_DEFUSER "nobody"
#define V9FS_DEFANAME ""
/* inital pool sizes for fids and tags */
#define V9FS_START_FIDS 8192
#define V9FS_START_TIDS 256
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